Conditions associated with Nasal congestion

Condition	Number of Nasal congestion reports
Oa	84
Obesity	26
Obsessive-compulsive disorder	9
Obsessive-compulsive neurosis	9
Obstructive airways disorder	9
Occipital neuralgia	2
Ocd	9
Ocular hyperaemia	3
Ocular surface disease	1
Oculocutaneous albinism	1
Oedema	56
Oedema aggravated	56
Oedema peripheral	27
Oesophageal carcinoma	2
Oesophageal disorder	7
Oesophageal stenosis	1
Oesophageal ulcer	1
Oesophagitis	8
Oesophagitis aggravated	8
Oestrogen replacement therapy	16
Ogilvie's syndrome	16
Open angle glaucoma	155
Ophthalmalgia	4
Optic neuritis	2
Oral allergy syndrome	1
Oral cancer	5
Oral candidiasis	10
Oral contraception	23
Oral discomfort	2
Oral disorder	5
Oral herpes	18
Oral ulcer	4
Ornithine transcarbamoylase deficiency	6
Oropharyngeal pain	34
Orthostatic hypotension	8
Orthostatic intolerance	1
Osteitis deformans	1
Osteoarthritis	86
Osteoarthritis aggravated	86
Osteoarthrosis	84
Osteomalacia in children	36
Osteomyelitis	6
Osteopenia	173
Osteoporosis	893
Osteoporosis post-menopausal	64
Osteoporosis postmenopausal	63
Osteoporotic fracture	3
Osteosclerosis	2
Otitis	26
Otitis media	5